Home / 13,540.08-20,310.54-3,679.32

Finding the Fourth Proportional to 13,540.08, 20,310.54 and 3,679.32

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Solution

The fourth proportional to 13,540.08, 20,310.54 and 3,679.32 is: 5,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.08 : 20,310.54 = 3,679.32 : x
  2. Step 2: Convert to fraction form
    13,540.08/20,310.54 = 3,679.32/x
  3. Step 3: Cross multiply
    13,540.08x = 20,310.54 × 3,679.32
  4. Step 4: Simplify right side
    13,540.08x = 74,728,976.03
  5. Step 5: Solve for x
    x = 74,728,976.03/13,540.08
  6. Step 6: Final answer
    x = 5,519.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.